No, it is composite.
No, it's prime.
A prime number cannot be a multiple of seven. You might be looking for 59.
97 is a prime number. A prime number has only 2 factors which are 1 and itself. Composite numbers are every other positive integer except 1 and 0. 1 and 0 are neither prime, nor composite.
Any multiple of 28.
. . . it is a multiple of seven.
It is composite.
No. 5 and 7 are both prime numbers.
When a number is a multiple of seven it is also divisible by seven.